/* Copyright (C) 2014 InfiniDB, Inc.

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation; version 2 of
   the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
   MA 02110-1301, USA. */

/****************************************************************************
 * $Id: func_quarter.cpp 3495 2013-01-21 14:09:51Z rdempsey $
 *
 *
 ****************************************************************************/

#include <cstdlib>
#include <string>
#include <sstream>
using namespace std;

#include "functor_int.h"
#include "funchelpers.h"
#include "functioncolumn.h"
#include "rowgroup.h"
using namespace execplan;

#include "dataconvert.h"

namespace funcexp
{
CalpontSystemCatalog::ColType Func_quarter::operationType(FunctionParm& fp,
                                                          CalpontSystemCatalog::ColType& resultType)
{
  return resultType;
}

int64_t Func_quarter::getIntVal(rowgroup::Row& row, FunctionParm& parm, bool& isNull,
                                CalpontSystemCatalog::ColType& op_ct)
{
  // try to cast to date/datetime
  int64_t val = 0, month = 0;
  dataconvert::DateTime aDateTime;
  dataconvert::Time aTime;

  switch (parm[0]->data()->resultType().colDataType)
  {
    case CalpontSystemCatalog::DATE:
      val = parm[0]->data()->getIntVal(row, isNull);
      month = (val >> 12) & 0xf;
      break;

    case CalpontSystemCatalog::DATETIME:
      val = parm[0]->data()->getIntVal(row, isNull);
      month = (val >> 44) & 0xf;
      break;

    case execplan::CalpontSystemCatalog::TIMESTAMP:
    {
      dataconvert::TimeStamp timestamp(parm[0]->data()->getTimestampIntVal(row, isNull));
      int64_t seconds = timestamp.second;
      dataconvert::MySQLTime m_time;
      dataconvert::gmtSecToMySQLTime(seconds, m_time, op_ct.getTimeZone());
      month = m_time.month;
      break;
    }

    // Time adds to now() and then gets value
    case CalpontSystemCatalog::TIME:
      aDateTime = static_cast<dataconvert::DateTime>(nowDatetime());
      aTime = parm[0]->data()->getTimeIntVal(row, isNull);
      aTime.day = 0;
      val = addTime(aDateTime, aTime);
      month = (uint32_t)((val >> 44) & 0xf);
      break;

    case CalpontSystemCatalog::CHAR:
    case CalpontSystemCatalog::TEXT:
    case CalpontSystemCatalog::VARCHAR:
    {
      val = dataconvert::DataConvert::stringToDatetime(parm[0]->data()->getStrVal(row, isNull));

      if (val == -1)
        isNull = true;
      else
        month = (val >> 44) & 0xf;

      break;
    }

    case CalpontSystemCatalog::BIGINT:
    case CalpontSystemCatalog::MEDINT:
    case CalpontSystemCatalog::SMALLINT:
    case CalpontSystemCatalog::TINYINT:
    case CalpontSystemCatalog::INT:
    {
      val = dataconvert::DataConvert::intToDatetime(parm[0]->data()->getIntVal(row, isNull));

      if (val == -1)
        isNull = true;
      else
        month = (val >> 44) & 0xf;

      break;
    }

    case CalpontSystemCatalog::DECIMAL:
    case CalpontSystemCatalog::UDECIMAL:
    {
      if (parm[0]->data()->resultType().scale == 0)
      {
        val = dataconvert::DataConvert::intToDate(parm[0]->data()->getIntVal(row, isNull));

        if (val == -1)
          isNull = true;
        else
          month = (val >> 12) & 0xf;

        break;
      }
      else
      {
        isNull = true;
        break;
      }
    }

    default: isNull = true;
  }

  return (int64_t)((month + 2) / 3);
}

}  // namespace funcexp
